In LiquidEarth , you can import volumetric meshes from VTK (.vtk) files. This allows you to bring in results from external modeling tools or simulation workflows and view, analyze, and annotate them directly in your 3D Workspace.
The VTK file format is a family of formats used to store scientific datasets (grids, meshes, and their associated attributes). In practice, there are three main variants:
Legacy VTK (.vtk)
The original, line-based format that can be ASCII or binary. It stores everything - geometry, topology, and data attributes - in a single file. It’s simple to read/write and widely supported.
XML VTK (.vti, .vtr, .vts, .vtp, .vtu, …)
A newer, XML-based family of formats with one file extension per dataset type. These support additional features such as better metadata, compression, and parallel I/O via “.pv*” meta-files.
VTK-HDF (.vthb, .vti with HDF, etc.)
An HDF5-backed variant designed for high-performance and large-scale data, combining VTK’s data model with HDF5’s storage and parallel I/O capabilities.
LiquidEarth currently supports only the legacy VTK format.
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For a detailed description take a look at the official VTK’s documentation.
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LiquidEarth supports the following legacy VTK volume grid types:
File format: ASCII or BINARY
VTK dataset types (geometry):
RECTILINEAR_GRID<aside> ⚠️
Internally, they are treated as uniform, axis-aligned voxel grids based on their dimensions. Non-uniform spacing (rectilinear) are not currently preserved; only the logical (i,j,k) structure and cell-centered scalar values are used.
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Supported attribute association: CELL_DATA